A pipe chain conveying feeder for 4,4'-bis(chloromethyl)biphenyl

Abstract

The utility model relates to a pipe chain conveyor feeding machine for 4,4'-bischloromethyl biphenyl, comprising a driving sprocket box, a driven sprocket box, a steering sprocket box, an endless chain, a chain sheet, a feeding pipe group and a discharging pipe group, wherein the feeding pipe group and the discharging pipe group are arranged between the driving sprocket box and the driven sprocket box; a discharge valve is connected to the casing; a feeding box is arranged on the feeding pipe group, a material balancing mesh plate is fixedly arranged on the upper part of the feeding box, a material guide plate is arranged on the bottom of the material balancing mesh plate, and the upper and lower parts of the material guide plate are respectively fixedly connected to an upper guide assembly and a lower guide assembly; the outlet end of the steering sprocket box is arranged as a conical blanking part. Under the action of the blanking part of the material balancing mesh plate, the material guide plate and the steering sprocket box, the utility model breaks up the block materials in the biphenyl raw material and evenly conveys them by the endless chain, thereby avoiding the bridging phenomenon of the materials, improving the conveying efficiency of the pipe chain conveyor feeding machine, and reducing the disassembly and assembly frequency of the steering sprocket box.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to a pipe chain conveying and feeding machine for 4,4'-bischloromethyl biphenyl. Background Art

[0002] 4,4'-Bis(chloromethyl)biphenyl is an important organic synthesis intermediate, which can be used to synthesize fluorescent brightener FP and fluorescent brightener CBSX. Among them, biphenyl is an important raw material for synthesizing 4,4'-dichloromethylbiphenyl, which is a white crystalline powder. At present, in the industrial production of 4,4'-bis(chloromethyl)biphenyl, most manufacturers put the biphenyl raw material from the raw material storage into a closed tube chain conveyor, and then transport it to the corresponding reactor through the tube chain conveyor for reaction and synthesis with other raw materials.

[0003] As a continuous conveying equipment for conveying bulk materials such as powder, small particles and small blocks, the pipe chain conveyor uses chain pieces as transmission components to drive the materials to move along the closed pipe. In order to make the chain pieces move in the pipe, the chain pieces are generally fixed on the endless chain connected end to end (the endless chain chain is composed of multiple chain links interlocking), and the endless chain chain is supported and driven by at least one driving sprocket and at least one driven sprocket, and the endless chain chain is driven by the rotation of the sprocket to move in a cycle. The installation of the pipe chain conveyor is more flexible, and it can be installed in complex and narrow spaces.

[0004] However, biphenyl raw materials will partially agglomerate during storage, and the material bridge phenomenon is easy to form at the outlet of the feeding box of the tube chain conveyor, affecting the conveying efficiency. In addition, in order to adapt to the complex and narrow space, a steering sprocket will be added to realize the reversing movement of the chain. The addition of the steering sprocket will inevitably set up a special steering box to close the steering sprocket. However, when the chain drives the chain plate through the steering sprocket, a large amount of material will fall to the bottom of the steering shell to form an accumulation. The long-term accumulation of biphenyl materials is easy to contaminate the subsequent conveyed materials. In order to solve this problem, the staff needs to regularly disassemble the steering box for cleaning, and multiple disassembly and maintenance will affect the service life of the equipment. Utility Model Content

[0005] The main purpose of the utility model is to provide a pipe chain conveying feeder for 4,4'-bischloromethyl biphenyl, so as to solve the problems of low conveying efficiency and high equipment maintenance frequency of the existing chain conveying feeder when conveying biphenyl raw materials.

[0006] To solve the above problems, the utility model is achieved as follows:

[0007] A pipe chain conveying feeder for 4,4'-bischloromethyl biphenyl, comprising a driving sprocket box with a driving sprocket, a driven sprocket box with a driven sprocket, at least one steering sprocket box with a steering sprocket, an annular chain formed by a plurality of chain links connected end to end, a plurality of chain plates evenly arranged on the annular chain, a feeding pipe group and a discharging pipe group, wherein the feeding pipe group and the discharging pipe group are arranged between the driving sprocket box and the driven sprocket box, the driving sprocket box, the feeding pipe group, the driven sprocket box and the discharging pipe group are connected to form a closed annular casing, the steering sprocket box is connected and arranged at the corner of the discharging pipe group; at least one unloading valve is connected and arranged on the casing;

[0008] A feeding box is connected and arranged on one side of the feeding pipe group close to the driving sprocket box, a feeding port is arranged on the top of the feeding box, a mesh-shaped material distribution screen for breaking up the biphenyl raw material is fixedly arranged on the upper part of the feeding box, a material guide plate is arranged on the bottom of the material distribution screen, the lower part of the material guide plate is fixedly connected to accommodate an upper guide assembly for the chain to pass through, and a lower guide assembly for accommodating the chain to pass through is arranged on the lower part of the feeding box;

[0009] The outlet end of the steering sprocket box is arranged as a tapered blanking portion.

[0010] Wherein, the material guide plate is in an inverted V-shaped structure with the opening facing downward.

[0011] Wherein, the upper guide assembly comprises an inner guide tube and outer guide tubes arranged at two axial ends of the inner guide tube, and the central axis of the outer guide tube is in the same straight line as the central axis of the inner guide tube;

[0012] The inner conduit is arranged horizontally and is located in the feeding box. The lower part of the inner conduit is provided with a strip-shaped notch which is communicated with the feeding box.

[0013] Wherein, a vertical pushing plate is arranged on the material balancing mesh plate, and a driving device is fixedly connected to the pushing plate, and the driving device drives the pushing plate to perform linear motion on the material balancing mesh plate.

[0014] Wherein, the lower guide assembly includes an arc-shaped bottom plate arranged at the bottom of the feeding box, and outer conduits arranged at both axial ends of the arc-shaped bottom plate, and the central axis of the arc-shaped bottom plate and the central axis of the outer conduit are in the same straight line.

[0015] Wherein, the blanking portion is in a tapered structure in a direction away from the steering sprocket box.

[0016] Wherein, the inclination angle of the side of the blanking portion away from the ring chain is larger than the inclination angle of the side close to the ring chain.

[0017] Wherein, a pipe chain tensioning adjustment device is arranged between the driven sprocket box and the feeding pipe group, and between the driven sprocket box and the discharging pipe group.

[0018] The pipe chain tensioning and adjusting device comprises an expansion joint, connecting flanges fixedly arranged at both axial ends of the expansion joint, an adjusting screw passing through the two connecting flanges, and an adjusting nut for tightening the adjusting screw.

[0019] Wherein, the expansion joint is a drum-shaped tubular structure with a protruding middle portion.

[0020] The beneficial effects of this application are:

[0021] 1. When the biphenyl raw material mixed with agglomerated materials falls into the feeding box, the block materials are first broken up when passing through the material-distributing mesh plate, and the broken up materials fall along the guide plate to the side wall of the feeding box, and then fall along the side wall of the feeding box in sequence to the radial sides of the inner conduit and the inner conduit, thus avoiding the block materials from falling directly into the bottom of the hopper and forming a bridge when being transported to the feeding pipe group, thereby improving the conveying efficiency of the pipe chain conveying feeding machine.

[0022] 2. When the tube chain conveyor completes the unloading work of the material from the unloading valve, the ring chain and chain plate push the remaining material through the driven sprocket box, the discharge pipe group and the steering sprocket box, and in the process of running to the driving sprocket box, the remaining material is pushed into the feeding box through the strip notch when passing through the feeding box, and is conveyed together with the material entering through the feeding port, which reduces the loss of material and avoids the accumulation of residual material in the driving sprocket box, reduces the number of times the driving sprocket box is disassembled and assembled, and reduces the maintenance frequency of the equipment, which extends the service life of the equipment to a certain extent.

[0023] 3. In the traditional pipe chain conveying equipment, when the biphenyl raw material passes through the steering sprocket box under the push of the ring chain and the chain plate, some of the material will fall into the lower part of the steering sprocket box and cannot contact the chain plate. However, the utility model adds a conical drop part. Under the action of the inclined side wall of the drop part, the biphenyl raw material falls along the inclined inner side wall into the joint with the flange connection pipe, and is completely pushed into the flange connection pipe under the action of the chain plate, avoiding the accumulation of materials at the lower part of the steering sprocket box, reducing the frequency of disassembly of the steering sprocket box, and prolonging the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] Figure 1 It is a structural schematic diagram of the utility model;

[0026] Figure 2 It is a structural schematic diagram of a feeding box of the utility model;

[0027] Figure 3 It is a schematic diagram of the internal structure of the feeding box of the utility model;

[0028] Figure 4 It is a structural schematic diagram of the steering sprocket box of the utility model;

[0029] Figure 5 It is a structural schematic diagram of the pipe chain tensioning and adjusting device of the utility model.

[0030] Description of Reference Numerals

[0031] 11. Driving sprocket box; 13. Base; 21. Driven sprocket box; 31. Steering sprocket; 32. Steering sprocket box; 320. Accommodation part; 321. Blanking part; 4. Ring chain; 41. Chain ring; 42. Chain plate; 5. Feeding pipe group; 51. First horizontal feeding pipe; 52. Second horizontal feeding pipe; 53. Vertical feeding pipe; 54. Bend pipe; 6. Discharging pipe group; 61. First horizontal discharging pipe; 62. Second horizontal discharging pipe; 63. Vertical discharging pipe Material pipe; 7. Discharge valve; 81. Feed box; 810. Feed inlet; 811. First side plate; 812. Second side plate; 813. Cover plate; 82. Material distribution mesh plate; 83. Guide plate; 84. Inner guide tube; 841. Strip notch; 85. Outer guide tube; 851. Push plate; 86. Drive device; 87. Arc bottom plate; 9. Pipe chain tensioning and adjusting device; 91. Expansion joint; 92. Connecting flange; 93. Adjusting screw; 94. Adjusting nut. DETAILED DESCRIPTION

[0032] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0033] like Figure 1 , Figure 4As shown, the pipe chain conveying feeder for 4,4'-bischloromethyl biphenyl of the utility model comprises a driving sprocket box 11 with a driving sprocket (i.e., the driving sprocket is rotatably connected in the driving sprocket box 11), a driven sprocket box 21 with a driven sprocket (i.e., the driven sprocket is rotatably connected in the driven sprocket box 21), at least one steering sprocket box 32 with a steering sprocket 31 (i.e., the steering sprocket 31 is rotatably connected in the steering sprocket box 32), a ring-shaped chain 4 composed of a plurality of chain links 41 connected end to end, a plurality of chain pieces 42 evenly arranged on the chain 4 (the position and connection of the chain pieces 42 and the chain 42 belong to the prior art, not to the improvement of the utility model, and will not be described in detail here), a feeding pipe group 5 and a discharging pipe group 6. In this embodiment, the driving sprocket is driven to rotate by a motor, which belongs to the conventional technology in the field. The feeding pipe group 5 and the discharging pipe group 6 are arranged between the driving sprocket box 11 and the driven sprocket box 21. The driving sprocket box 11, the feeding pipe group 5, the driven sprocket box 21, and the discharging pipe group 6 are connected to form a closed annular casing, and the steering sprocket box 32 is connected and arranged at the corner of the discharging pipe group 6.

[0034] like Figure 1 , Figure 4As shown, in the present embodiment, two connecting pipes for the endless chain 4 to pass through are arranged on one side of the driving sprocket box 11 and one side of the driven sprocket box 21; the feeding pipe group 5 and the discharging pipe group 6 are both Z-shaped pipelines, and the feeding pipe group 5 includes at least one first horizontal feeding pipe 51 (a plurality of first horizontal feeding pipes 51 are connected to form a straight pipe section), at least one second horizontal feeding pipe 52 (a plurality of second horizontal feeding pipes 52 are connected to form a straight pipe section), and at least one vertical feeding pipe 53 (a plurality of vertical feeding pipes 53 are connected to form a straight pipe section). The first horizontal feeding pipe 51 and the second horizontal feeding pipe 52 are both arranged horizontally, and the second horizontal feeding pipe 52 is located above the first horizontal feeding pipe 51, and the vertical feeding pipe 53 is arranged vertically, between the bottom end of the vertical feeding pipe 53 and the outlet end of the first horizontal feeding pipe 51, and between the vertical feeding pipe The top end of 53 is connected to the inlet end of the second horizontal feeding pipe 52 through an arc-shaped bent pipe 54; the discharge pipe group 6 includes at least one first horizontal discharge pipe 61 (multiple first horizontal discharge pipes 61 are connected to form a straight pipe section), at least one second horizontal discharge pipe 62 (multiple second horizontal discharge pipes 62 are connected to form a straight pipe section), and at least one vertical discharge pipe 63 (multiple vertical discharge pipes 63 are connected to form a straight pipe section). The first horizontal discharge pipe 61 and the second horizontal discharge pipe 62 are both horizontally arranged, and the second horizontal discharge pipe 62 is located above the first horizontal discharge pipe 61. The vertical discharge pipe 63 is vertically arranged, and the bottom end of the vertical discharge pipe 63 and the inlet end of the first horizontal discharge pipe 61, as well as the top end of the vertical discharge pipe 63 and the outlet end of the second horizontal discharge pipe 62 are all connected through the steering sprocket box 32. The outlet end of the second horizontal feeding pipe 52 is connected to a connecting pipe of the driven sprocket box 21, and the other connecting pipe of the driven sprocket box 21 is connected to the inlet end of the second horizontal discharging pipe 63. The outlet end of the first horizontal discharging pipe 61 is connected to a connecting pipe of the driving sprocket box 11, and the other connecting pipe of the driving sprocket box 11 is connected to the inlet end of the first horizontal feeding pipe 51. In this way, the driving sprocket box 11, the feeding pipe group 5, the driven sprocket box 21, the discharging pipe group 6, and the steering sprocket box 32 connected at the corner of the discharging pipe group 6 are connected to form a closed annular housing. The endless chain 4 is wound around the driving sprocket, the driven sprocket, and the steering sprocket 31, and runs along the closed housing driven by the driving sprocket. The connection relationship between the endless chain 4 and the driving sprocket, the driven sprocket, and the steering sprocket 31 belongs to the conventional technology in this field, and does not belong to the improvement of the utility model, so it is not repeated in the utility model. In this embodiment, the inlet end and the outlet end of each tube group are set along the conveying direction of the biphenyl raw material. The end where the material enters the tube group is the inlet end, and the end where the material flows out of the tube group is the outlet end. In this utility model, Figure 1 As mentioned above, the direction indicated by the arrow is the conveying direction of the biphenyl raw material, that is, the running direction of the ring chain 4 .

[0035] like Figure 1As shown, at least one discharge valve 7 is connected to the casing. In this embodiment, the discharge valve 7 is fixed and connected to the second horizontal feeding pipe 52 of the feeding pipe group 5 .

[0036] like Figure 1-Figure 3 As shown, a feeding box 81 is connected and arranged on one side of the feeding pipe group 5 close to the driving sprocket box 11. Specifically, the feeding box 81 is fixed and connected to the first horizontal feeding pipe 51 of the feeding pipe group 5. A feeding port 810 is connected and arranged on the top of the feeding box 81. A mesh-shaped balancing mesh plate 82 for breaking up the biphenyl raw material is fixedly arranged on the upper part of the feeding box 81. In this embodiment, the structure of the balancing mesh plate 82 is that the balancing mesh plate 82 includes multiple cross bars and multiple longitudinal bars, and the multiple cross bars and multiple longitudinal bars are crossed in a grid shape. The edge of the balancing mesh plate 82 is fitted and fixedly connected to the corresponding side in the feeding box 81, and the two can be fixedly connected by conventional threaded connection. A guide plate 83 is arranged at the bottom of the material-distributing mesh plate 82. The guide plate 83 is an inverted V-shaped structure with an opening facing downward. In this embodiment, the guide plate includes two strip plates, which are integrally formed into a V-shaped plate with an opening facing downward. The axial ends of the V-shaped plate abut against the corresponding sides in the feeding box 81 to achieve maximum material guiding. The lower part of the guide plate 83 is fixedly connected to an upper guide assembly for accommodating the ring chain 4 passing through. The upper guide assembly includes an inner conduit 84 and an outer conduit 85 connected to the axial ends of the inner conduit 84. The inner conduit 84 is arranged horizontally and is located in the feeding box 81. The central axis of the outer conduit 85 is in the same straight line as the central axis of the inner conduit 84. The lower part of the inner conduit 84 is provided with a strip notch 841 connected to the feeding box. The length direction of the strip notch 841 is parallel to the axial direction of the inner conduit 84. The axial ends of the strip notch 841 are flush with the axial corresponding ends of the inner conduit 84. The axial ends of the inner conduit 84 are fixedly connected to the corresponding ends in the feeding box 81 by welding. One of the outer conduits 85 is connected to the outlet end of the first horizontal discharge pipe 61, and the other outer conduit 85 is connected to the driving sprocket box 11. In this embodiment, the top of the guide plate 83 is located directly below the feed inlet 810. A vertical push plate 851 is provided on the material distribution mesh plate 82, and a driving device 86 is fixedly connected to the push plate 851. The driving device 86 drives the push plate 851 to perform linear reciprocating motion in the horizontal direction on the material distribution mesh plate. In this embodiment, the driving device 86 uses a cylinder, and the piston rod end of the cylinder is fixedly connected to one side of the push plate 851.

[0037] like Figure 1-Figure 3As shown, the lower part of the feeding box 81 is provided with a lower guide assembly for accommodating the loop chain 4 passing through. In the present embodiment, the lower guide assembly is arranged at the bottom of the feeding box 81. The lower guide assembly includes an arc bottom plate 87 arranged at the bottom of the feeding box 81, and an outer conduit 85 arranged at both axial ends of the arc bottom plate 87, and the central axis of the arc bottom plate 87 is in the same straight line as the central axis of the outer conduit 85. The arc bottom plate 87 is the bottom plate of the feeding box 81, and the bottom plate is arranged in an arc shape to facilitate the passage of the loop chain. In addition, the feeding box 81 includes two first side plates 811 arranged opposite to each other, and two second side plates 812 arranged opposite to each other, the two first side plates 811 are arranged obliquely, and the bottom ends of the two first side plates 811 are connected by the arc bottom plate 87, and the two first side plates 811 and the arc bottom plate 87 are connected as a whole to form a V-shaped structure. The two second side plates 812 are arranged opposite to each other and are located between the two first side plates 811. The second side plates 812 are inverted triangular plate structures. The two first side plates 811, the two second side plates 812, and the arc bottom plate 87 are a box body with an open top. The top open part of the box body is fixedly covered with a cover plate 813. The feed port 810 is opened in the middle of the cover plate 813. Among the two outer conduits 85 of the lower guide assembly, one of the outer conduits 85 is communicated with the driving sprocket box 11, and the other outer conduit 85 is communicated with the inlet end of the first horizontal feeding pipe 51 of the feeding pipe group 5.

[0038] like Figure 1-Figure 3 As shown, in this embodiment, the biphenyl raw material will produce agglomeration during the storage process. When the agglomerated material enters from the feed inlet 810, it can first pass through the material distribution mesh plate 82, which breaks up the block materials mixed in the biphenyl raw material and evenly distributes the raw materials to the arc bottom plate 87 at the bottom of the feeding box 81, and then transports the biphenyl raw material to the first horizontal feeding pipe 51 of the feeding pipe group 5 through the ring chain and the chain sheet. The function of the guide plate 83 is that after the material is broken up by the material distribution mesh plate 82, it can fall along the guide plate 83 to the side wall of the feeding box 81, and then fall along the side wall of the feeding box 81 to the radial sides of the inner conduit 84 and the inner conduit 84 in sequence. The push plate 851 can push the residual material falling on the material distribution mesh plate 82 to the hollow part, and can also preliminarily crush the block materials passing through the material distribution mesh plate 82 to a certain extent. When the strip notch 841 is in effect, after the tube chain conveyor has completed the unloading work of the material through the unloading valve 7, the endless chain 4 and the chain piece 42 push the remaining material through the driven sprocket box 32, the discharge pipe group 6 and the steering sprocket box 32, and in the process of running to the driving sprocket box 11, the remaining material is pushed into the feeding box 81 through the strip notch 841 when passing through the feeding box, and is conveyed together with the material entering through the feeding port 810, thereby reducing the loss of the material. At the same time, it avoids the accumulation of residual material in the driving sprocket box, reduces the number of times the driving sprocket box is disassembled and assembled, that is, reduces the maintenance frequency of the equipment, and to a certain extent prolongs the service life of the equipment.

[0039] like Figure 1 and Figure 4 As shown, the outlet end of the steering sprocket box 32 is set as a tapered blanking portion. The blanking portion is a tapered structure in the direction away from the steering sprocket box 32. The inclination angle of the side of the blanking portion away from the ring chain 4 is larger than the inclination angle of the side close to the ring chain 4. In this embodiment, the steering sprocket box 32 includes a housing 320 for accommodating the rotation of the steering sprocket 31, and a blanking portion 321 connected and arranged at the outlet end of the housing 320, one side of the housing 320 is connected and arranged with a flange connection pipe, and the end of the blanking portion 321 opposite to the housing 320 is connected and arranged with a flange connection pipe, and the central axis of the flange connection pipe of the blanking portion 321 is perpendicular to the central axis of the flange connection pipe of the housing 320, which is convenient for the operation of the ring chain, and the ring chain 4 penetrates into the flange connection pipe of the housing 320 and is arranged around one side of the steering sprocket 31, and passes out from the flange connection pipe of the blanking portion 321. In this embodiment, the side where the ring chain is meshed with the steering sprocket 31 is the "side of the blanking portion close to the ring chain 4", and the "side of the blanking portion away from the ring chain 4" is the opposite side. In this embodiment, the blanking portion 321 is a cylindrical structure surrounded by a plurality of inclined first side plates 811.

[0040] In the conventional pipe chain conveying equipment, when the biphenyl raw material passes through the steering sprocket box 32 under the push of the ring chain and the chain sheet, part of the material will fall into the lower part of the steering sprocket box 32 and cannot contact the chain sheet 42. In this embodiment, Figure 1 and Figure 4 As shown, a conical blanking portion 321 is added. Under the action of the inclined side wall of the blanking portion 321, the biphenyl raw material falls along the inclined inner wall into the joint with the flange connection pipe, and is completely pushed into the flange connection pipe under the action of the chain piece 42, thereby avoiding the accumulation of materials at the bottom of the steering sprocket box 32.

[0041] like Figure 1 and Figure 5As shown, a pipe chain tensioning and adjusting device 9 is connected and arranged between the driven sprocket box 21 and the feeding pipe group 5, and between the driven sprocket box 21 and the discharging pipe group 6. The pipe chain tensioning and adjusting device 9 comprises an expansion joint 91, connecting flanges 92 fixedly arranged at both ends of the expansion joint 91 in the axial direction, an adjusting screw 93 passing through the two connecting flanges 92, and an adjusting nut 94 for tightening the adjusting screw 93. In this embodiment, there are three adjusting nuts 94 on each adjusting screw 93, two of which are respectively screwed on the inner sides of the two connecting flanges 92, and the other is screwed on the outer side of the connecting flange 92, and is used to tighten the driven sprocket box 21. The two connecting flanges 92 are respectively connected to the connecting pipes of the discharging pipe group 6 and the driven sprocket box 21, and the adjusting screw 93 passes through the flange on the discharging pipe group 6, the two connecting flanges 92, and the flange on the connecting pipe of the driven sprocket box 21 in sequence, and the adjusting screw 93 is tightened by the adjusting nut 94. In this embodiment, the expansion joint 91 is a drum-shaped tubular structure with a protruding middle portion, and the expansion joint 91 is a rubber expansion joint, and the material of the rubber expansion joint is also the prior art, which is not an innovation of this application. There are multiple adjusting screws 93, and the multiple adjusting screws 93 are evenly arranged along the circumferential direction of the connecting flange 92.

[0042] like Figure 1 and Figure 5 As shown, the tube chain conveyor is usually long, and the endless chain 4 is composed of many chain links 41. After being used for a period of time, the endless chain is deformed and becomes loose. At this time, the endless chain 4 can be tightened by the tube chain tensioning adjustment device 9 of the utility model to prevent it from being derailed.

[0043] like Figure 1 and Figure 5 As shown, the usage of the pipe chain tensioning and adjusting device 9 is as follows: 1. The bottom of the driven sprocket box 21 is fixedly connected with a base 13 for supporting it. The base 13 is provided with a strip hole for cooperating with the driven sprocket box 21 to slide. The driven sprocket box 21 is fixed to the strip hole of the base 13 by the cooperation of bolts and nuts. Before adjusting the tightness of the ring chain 4, first loosen the bolts between the driven sprocket box 21 and the base 13; 2. Then loosen the adjusting nut 94 on the adjusting screw 93; 3. Fine-tune the driven sprocket box to a suitable position, and then tighten the adjusting nut 94 on the adjusting screw 93 so that the adjusting screw 93 can press the two flange surfaces; 4. Finally, tighten the bolts between the base 13 and the driven sprocket box 21.

[0044] Through the above operation, the length of the adjusting screw 93 is increased, the expansion joint 91 is extended, and the chain is tightened. The above method can complete the work of adjusting the tension of the chain with the minimum workload, avoiding the disassembly and assembly of the entire pipe chain system.

[0045] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A pipe chain conveying feeder for 4,4'-bischloromethyl biphenyl, comprising a driving sprocket box with a driving sprocket, a driven sprocket box with a driven sprocket, at least one steering sprocket box with a steering sprocket, an annular chain consisting of a plurality of chain links connected end to end, a plurality of chain plates evenly arranged on the chain, a feeding pipe group and a discharging pipe group, characterized in that: The feeding pipe group and the discharging pipe group are arranged between the driving sprocket box and the driven sprocket box. The driving sprocket box, the feeding pipe group, the driven sprocket box and the discharging pipe group are connected to form a closed annular casing. The steering sprocket box is connected and arranged at the corner of the discharging pipe group. At least one discharging valve is connected and arranged on the casing. A feeding box is connected and arranged on one side of the feeding pipe group close to the driving sprocket box, a feeding port is arranged on the top of the feeding box, a mesh-shaped material distribution screen for breaking up the biphenyl raw material is fixedly arranged on the upper part of the feeding box, a material guide plate is arranged on the bottom of the material distribution screen, the lower part of the material guide plate is fixedly connected to accommodate an upper guide assembly for the chain to pass through, and a lower guide assembly for accommodating the chain to pass through is arranged on the lower part of the feeding box; The outlet end of the steering sprocket box is arranged as a tapered blanking portion.

2. A pipe chain conveying feeder for 4,4'-bis(chloromethyl)biphenyl according to claim 1, characterized in that: The material guide plate is in an inverted V-shaped structure with an opening facing downward.

3. A pipe chain conveying feeder for 4,4'-bis(chloromethyl)biphenyl according to claim 1, characterized in that: The upper guide assembly comprises an inner guide tube and outer guide tubes arranged at two axial ends of the inner guide tube, wherein the central axis of the outer guide tube is in the same straight line as the central axis of the inner guide tube; The inner conduit is arranged horizontally and is located in the feeding box. The lower part of the inner conduit is provided with a strip-shaped notch which is communicated with the feeding box.

4. A pipe chain conveying feeder for 4,4'-bis(chloromethyl)biphenyl according to claim 1, characterized in that: A vertical push plate is arranged on the material balancing mesh plate, and a driving device is fixedly connected to the push plate, and the driving device drives the push plate to perform linear motion on the material balancing mesh plate.

5. A pipe chain conveying feeder for 4,4'-bis(chloromethyl)biphenyl according to claim 1, characterized in that: The lower guide assembly includes an arc-shaped bottom plate arranged at the bottom of the feeding box, and outer conduits arranged at both axial ends of the arc-shaped bottom plate, and the central axis of the arc-shaped bottom plate and the central axis of the outer conduit are in the same straight line.

6. A pipe chain conveying feeder for 4,4'-bis(chloromethyl)biphenyl according to claim 1, characterized in that: The blanking portion is in a tapered structure along a direction away from the steering sprocket box.

7. A pipe chain conveying feeder for 4,4'-bis(chloromethyl)biphenyl according to claim 1, characterized in that: The inclination angle of the side of the blanking portion away from the endless chain is larger than the inclination angle of the side close to the endless chain.

8. A pipe chain conveying feeder for 4,4'-bis(chloromethyl)biphenyl according to claim 1, characterized in that: A pipe chain tensioning adjustment device is provided between the driven sprocket box and the feeding pipe group, and between the driven sprocket box and the discharging pipe group.

9. A pipe chain conveying feeder for 4,4'-bischloromethyl biphenyl according to claim 8, characterized in that: The pipe chain tensioning and adjusting device comprises an expansion joint, connecting flanges fixedly arranged at two axial ends of the expansion joint, an adjusting screw rod passing through the two connecting flanges, and an adjusting nut used for fastening the adjusting screw rod.

10. A pipe chain conveying and feeding machine for 4,4'-bis(chloromethyl)biphenyl according to claim 9, characterized in that: The expansion joint is in the form of a drum-shaped tubular structure with a protruding middle portion.

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